Classijication of the Order Iniomi. 

 Fig. 2. 



123 



Aulopus Jilamentosus ; lateral view of skeleton of head. 



pmx, pr£eniaxillary ; in:v, maxillary ; smx, smx', supramaxillaries ; den, 

 dentary ; ar, articulare ; an, angulare ; jml, palatine ; pt, pterygoid ; 

 ms, mesopterygoid ; mt, metapterygoid ; qv,, quadrate ; sy, symplec- 

 tic ; h7n, hyomandibular ; poj-), prseoperculum ; op, operculum ; sop, 

 suboperculum ; iop, interoperculum ; n, nasal ; in, infranasal ; pror, 

 prseorbital ; cor, circumorbitals ; sorb, supraorbital ; osp, orbito- 

 sphenoid ; asp, alisphenoid ; psp, parasphenoid ; eth, mesethmoid ; 

 f, frontal ; /?, parietal ; pto, pterotic ; t, temporal plate ; ptte^ post- 

 temporal. 



Fig. 3. 



A ulopus Jilamentosus. 



A. Pectoral arch, ptte, post-temporal; scl, supracleithrum ; pel, post- 



cleitbrum ; cl, cleithrum ; sc, bypercoracoid ; cor, bypocoracoid ; 

 r, radials. 



B. Pelvic bones, f, foramen ; c, posterior process ; .r, position of base 



of fin. 



